> ## Documentation Index
> Fetch the complete documentation index at: https://nango.dev/docs/llms.txt
> Use this file to discover all available pages before exploring further.

# ePost (KLARA)

> Integrate your application with the ePost Digital Letterbox API (built on KLARA) to onboard users into digital mail delivery

## 🚀 Quickstart

Connect to ePost (KLARA) with Nango and see data flow in 2 minutes.

**1. Create the integration**

In Nango ([free signup](https://app.nango.dev)), go to [Integrations](https://app.nango.dev/dev/integrations) -> *Configure New Integration* -> *ePost (KLARA)*.

**2. Authorize ePost (KLARA)**

Go to [Connections](https://app.nango.dev/dev/connections) -> *Add Test Connection* -> *Authorize*, then enter your KLARA API key. Later, you'll let your users do the same directly from your app.

**3. Call the ePost (KLARA) API**

Let's make your first request to the ePost onboarding API (generate an onboarding link). Replace the placeholders below with your [Environment API key](https://nango.dev/docs/reference/backend/http-api/api-keys.md), [integration ID](https://app.nango.dev/dev/integrations), and [connection ID](https://app.nango.dev/dev/connections):

> [tab] cURL
>
> ```bash theme={null}
> curl "https://api.nango.dev/proxy/epost/onboarding" \
>   -X POST \
>   -H "Authorization: Bearer <NANGO-API-KEY>" \
>   -H "Provider-Config-Key: <INTEGRATION-ID>" \
>   -H "Connection-Id: <CONNECTION-ID>" \
>   -H "Content-Type: application/json" \
>   -H "Accept: text/html;charset=UTF-8, application/json" \
>   -d '{
>     "pinBrandedFolder": false
>   }'
> ```

> [tab] Node
>
> Install Nango's backend SDK with `npm i @nangohq/node`. Then run:
>
> ```typescript theme={null}
> import { Nango } from '@nangohq/node';
>
> const nango = new Nango({ apiKey: '<NANGO-API-KEY>' });
>
> const res = await nango.post({
>     endpoint: '/epost/onboarding',
>     providerConfigKey: '<INTEGRATION-ID>',
>     connectionId: '<CONNECTION-ID>',
>     headers: {
>         accept: 'text/html;charset=UTF-8, application/json'
>     },
>     data: {
>         pinBrandedFolder: false
>     }
> });
>
> console.log(res.data);
> ```

Or fetch credentials with the [Node SDK](https://nango.dev/docs/reference/backend/backend-sdk/node.md#get-a-connection-with-credentials) or [API](https://nango.dev/docs/reference/backend/http-api/connections/get.md).

✅ You're connected! Check the [Logs](https://app.nango.dev/dev/logs) tab in Nango to inspect requests.

**4. Implement Nango in your app**

Follow our [Auth implementation guide](https://nango.dev/docs/guides/auth/auth-guide.md) to integrate Nango in your app.

To obtain your own credentials, follow the connect guide linked below.

## 📚 ePost (KLARA) integration guides

Nango maintained guides for common use cases.

* [How do I link my ePost (KLARA) account?](https://nango.dev/docs/api-integrations/epost-klara/connect)\
  Create an API key in KLARA and connect it to Nango

Official docs: [ePost Communication Platform Business documentation](https://developer.epost.ch/docs/api-docs/hvshdeijjdlzq-e-post-communication-platform-business-documentation)

## 🧩 Pre-built syncs & tools for ePost (KLARA)

Explore Nango-provided tools in your dashboard. [Extend and customize them](https://nango.dev/docs/guides/functions/functions-guide.md) to fit your needs.

*No pre-built syncs or tools available yet.*

> [!TIP]
>
> Not seeing the integration you need? [Build your own](https://nango.dev/docs/guides/functions/functions-guide.md) independently.

***


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